A method for applying a sealing member to a capsule intended for the preparation of a beverage in a device for making beverages, where the capsule includes a body having a bottom wall, a side wall and a flange-like rim which extends from the side wall, comprises a step of applying a charge of sealing composition in a viscous state on the flange-like rim and a step of compression moulding the charge of sealing composition against the flange-like rim.

What is presented is a method of forming a closure with a sealing gasket in an injection molding machine that has a center rotating cube. The center rotating cube comprises a plurality of mold back halves each comprising cores and a thread unscrewing mechanism. Each core is shaped to form a closure that has a thread and an anti-rotation feature. The method comprises the steps of forming a closure with a through hole, rotating the core to create a gap between the formed closure and the core, and injecting a compressible material through the through hole and into the gap to form a sealing gasket.

The invention relates to a method for applying a sealing member onto the cup-shaped container of a capsule intended for producing a beverage in a beverage production device, wherein the container has a bottom wall, a side wall with an outer surface, an open end and an annular flange which extends from the side wall of the container at the open end; the flange comprising a flange outer surface merging with the outer surface of the side wall at a transition area an flange inner surface opposite to the outer surface for being sealed with a beverage delivery wall, the method comprising the steps of: depositing molten thermoplastic polymer material by a depositing apparatus onto the outer surface of the annular flange and/or onto the transition area, subsequently pressing the thermoplastic polymer material by a punch-die while the material still being plastically deformable so as to conform it in its final shape onto the outer surface of the annular flange and/or onto the transition area thereby forming it into an annular sealing member attached to the container. The invention further relates to a device adapted for carrying out the method.

The invention relates to a method for applying a sealing member onto the cup-shaped container of a capsule intended for producing a beverage in a beverage production device, wherein the container has a bottom wall, a side wall with an outer surface, an open end and an annular flange which extends from the side wall of the container at the open end; the flange comprising a flange outer surface merging with the outer surface of the side wall at a transition area an flange inner surface opposite to the outer surface for being sealed with a beverage delivery wall, the method comprising the steps of: depositing molten thermoplastic polymer material by a depositing apparatus onto the outer surface of the annular flange and/or onto the transition area, subsequently pressing the thermoplastic polymer material by a punch-die while the material still being plastically deformable so as to conform it in its final shape onto the outer surface of the annular flange and/or onto the transition area thereby forming it into an annular sealing member attached to the container. The invention further relates to a device adapted for carrying out the method.

A method for manufacturing a beverage capsule with an outer sealing ring comprised of elastic material involves the following steps: (a) providing a capsule body with a peripheral, flange-like edge for attaching a sealing film; (b) providing a sealing ring comprised of elastic material and adjusted to the flange-like edge; (c) placing the sealing ring and the capsule body in a capsule mount of a sealing device for sealing the capsule body with the sealing film, with the sealing ring arranged between the capsule mount and the flange-like edge of the capsule body; (d) filling the capsule body with a beverage substrate; and sealing the capsule body with the sealing film and simultaneously fastening the sealing ring to the flange-like edge using the sealing device.

A method for manufacturing a beverage capsule with an outer sealing ring comprised of elastic material involves the following steps: (a) providing a capsule body with a peripheral, flange-like edge for attaching a sealing film; (b) providing a sealing ring comprised of elastic material and adjusted to the flange-like edge; (c) placing the sealing ring and the capsule body in a capsule mount of a sealing device for sealing the capsule body with the sealing film, with the sealing ring arranged between the capsule mount and the flange-like edge of the capsule body; (d) filling the capsule body with a beverage substrate; and sealing the capsule body with the sealing film and simultaneously fastening the sealing ring to the flange-like edge using the sealing device.

A cap of the press-twist type for a container, includes: a metal capsule having a transversal wall of longest extension which extends transversely with respect to an axis of the container, and a lateral wall; a curling in the distal part with respect to the transversal wall of the lateral wall by means of a curling operation; a sealing gasket with an annular shape for engaging with an opening of the container. The sealing gasket is made of a PVC-free material and includes a lateral portion, positioned in contact with the lateral wall of the capsule, which includes two portions away from the transversal wall of the capsule: a first distal portion relative to the transversal wall of the capsule and a second proximal portion relative to the transversal wall of the capsule, with a thickness greater than the first distal portion.

A method for applying a sealing member to a capsule intended for the preparation of a beverage in a device for making beverages, where the capsule includes a body having a bottom wall, a side wall and a flange-like rim which extends from the side wall, comprises a step of applying a charge of sealing composition in a viscous state on the flange-like rim and a step of compression moulding the charge of sealing composition against the flange-like rim.

What is presented is a method of forming a closure with a sealing gasket in an injection molding machine that has a center rotating cube. The center rotating cube comprises a plurality of mold back halves each comprising cores and a thread unscrewing mechanism. Each core is shaped to form a closure that has a thread and an anti-rotation feature. The method comprises the steps of forming a closure with a through hole, rotating the core to create a gap between the formed closure and the core, and injecting a compressible material through the through hole and into the gap to form a sealing gasket.

A control plate for effecting superior shut-off in a proportional control valve comprises a moveable disk-shaped element that has a flat surface, generally perpendicular to the valve axis of symmetry when closed, and translates toward or away from an orifice surrounded by a narrow lip or orifice ridge. Enhanced leak tightness in the valve shut-off condition is achieved by selectively incorporating into the control plate materials that are softer than the material comprising the orifice ridge.